Tutorials Cloud Computing Tutorial
ConfigMaps — Complete Guide
ConfigMaps — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Cloud Computing Tutorial on Toolliyo Academy.
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Cloud Computing Tutorial · Lesson 37 of 100
ConfigMaps
Foundations ✓ → Platform → Ops → Projects
Platform · 2 — Containers & data · ~6 min · Cloud — Kubernetes & Orchestration
What is this?
ConfigMaps store non-secret config as key/value mounted or injected into Pods.
Why should you care?
CloudVerse keeps feature flags and URLs out of images when they change often.
See it live — copy this example
Use AWS/Azure/GCP free tier or local Docker/Kind. Sketches and YAML are meant to be typed and adapted.
apiVersion: v1
kind: ConfigMap
metadata: { name: api-config }
data:
ASPNETCORE_ENVIRONMENT: Production
Catalog__BaseUrl: http://catalog
# mount or envFrom in DeploymentWhat happened?
- Changing ConfigMap does not always restart pods — plan reload strategy.
- Don’t put secrets here.
Practice next
- Create ConfigMap.
- envFrom in Deployment.
- Change value and rollout.
- Mount as file.
- Immutable ConfigMap pattern.
Remember
Non-secret config. Inject/mount. Rollout on change.
CloudVerse api-config
BaseUrl from ConfigMap.
Outcome: Image stays unchanged for config tweaks.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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